DTC B1193
Precautions: Precautions for Diagnosing Trouble · Precautions for Replacing Remote Controller · Precautions for Remote Controller Disposal · Precautions for Replacing Keyless Start Control Module · Precautions for Control Systems · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
B1193: Ignition 2 Relay Malfunction Inconsistency between input voltage via “IG2 SIG” fuse and IG2 relay control condition continuous for longer than specified time. |
•IG2 relay circuit / connector
•IG2 relay •“IGN2” fuse (D16AA model) •“IG2 SIG” fuse •Keyless start control module |
Circuit Diagram
| [A]: | Keyless start control module connector (View: [a]) | B3: | IG2 relay signal circuit | 4. | “ACC” fuse |
| [B]: | D16AA model | C1: | ACC relay power supply circuit (coil side) | 5. | IG1 relay |
| A1: | ACC relay power supply circuit (switch side) | C2: | IG1 relay power supply circuit (coil side) | 6. | “MTR” fuse |
| A2: | IG1 relay power supply circuit (switch side) | C3: | IG2 relay power supply circuit (coil side) | 7. | IG2 relay |
| A3: | IG2 relay power supply circuit (switch side) | 1. | “IGN” fuse | 8. | “IG2 SIG” fuse |
| B1: | ACC relay signal circuit | 2. | “IGN2” fuse | 9. | Keyless start control module |
| B2: | IG1 relay signal circuit | 3. | ACC relay |
DTC Confirmation Procedure
1)Check that ignition is “OFF”.
2)Set ignition “ACC”.
3)Set ignition “ON”.
4)Repeat Step 1) – 3) several times.
DTC Troubleshooting
NOTE:
This DTC might be detected when battery is run down or the voltage is very low.
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
IG2 relay power supply circuit (switch side) check
1)Check that ignition is “OFF”.
2)Remove IG2 relay.
3)Check that voltage between “A3” circuit and ground is battery voltage.
Is check result OK?
|
Go to Step 2.
|
Repair or replace defective wire harness and “IGN2” fuse.
|
| 2 |
Fuse check
1)Check “IG2 SIG” fuse.
Is check result OK?
|
Go to Step 4.
|
Go to Step 3.
|
| 3 |
IG2 relay signal circuit check
1)Set ignition “OFF”.
2)Disconnect “L21” connector.
3)Check for proper terminal connection to “L21” connector.
4)If connections are OK, check the following points.
•Resistance between “B3” circuit and ground: infinity
•Resistance between “B3” circuit terminal and each terminal at IG2 relay connector: infinity Is check result OK?
|
Replace “IG2 SIG” fuse and keyless start control module and recheck DTC.
|
Repair or replace defective wire harness, and then replace “IG2 SIG” fuse.
|
| 4 |
IG2 relay signal circuit check
1)Set ignition “OFF”.
2)Disconnect “L21” connector.
3)Check for proper terminal connection to “L21” connector.
4)If connections are OK, check the following points.
•Resistance of “B3” circuit: less than 1 Ω
•Resistance between “B3” circuit terminal and each terminal at IG2 relay connector: infinity •Voltage of “B3” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 5.
|
Repair or replace defective wire harness.
|
| 5 |
IG2 relay power supply circuit (coil side) check
1)Check the following points.
•Resistance of “C3” circuit: less than 1 Ω
•Resistance between “C3” circuit and ground: infinity •Resistance between “C3” circuit terminal and each terminal at IG2 relay connector: infinity •Voltage of “C3” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 6.
|
Repair or replace defective wire harness.
|
| 6 |
IG2 relay check
1)Check IG2 relay.
Is check result OK?
|
Replace keyless start control module and recheck DTC.
|
Replace IG2 relay.
|